1. A special book: If you know that your girlfriend likes reading, you can consider giving her a book that she has always wanted to read but hasn't started, or a special limited edition signed book.
2. Customized handicrafts: You can find some unique handicrafts online or in the local handicraft market, such as hand-painted oil paintings and handmade ceramics. Or make a custom craft yourself.
3. Special experience: You can give your girlfriend a special experience, such as a romantic candlelight dinner, a surprise trip, a meaningful public welfare activity, etc.
4. Special food: If you know that your girlfriend likes certain food or special food, you can consider giving her a special cake, chocolate, restaurant reservation or cooking a delicious food yourself.
5. Special souvenir: You can give your girlfriend a special souvenir, such as a commemorative photo, a special commemorative jewelry, a commemorative souvenir, etc.
These are my unconventional 520 gift suggestions for you. I hope I can help you.